Re: Patch FIOFLUSH

Christoph Hellwig (hch@infradead.org)
Wed, 21 May 2003 18:38:14 +0100


On Wed, May 21, 2003 at 10:28:03AM -0700, Ross Biro wrote:
>
> Here's a patch against 2.4.18 that allows user space to flush a file
> from both the buffer cache and the page cache. The reason for flushing
> a file from the caches is to the read the file again to verify it made
> it to more permanent storage correctly. Someone may want to add
> similiar code to 2.5.

This came up at SGI some time ago and the right solution is _not_ a new
ioctl but fadvise(..., POSIX_FADV_DONTNEED). I'll submit a clean backport
once 2.4.21 is out (if that will ever happen)

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